Delaware River at Frenchtown, NJ
River level and flood forecast · Hunterdon County
The river is 12.5 ft below flood stage (16 ft).
Forecast to fall to 2.7 ft by Thu, Oct 15, 2 PM.
The last 7 days and the forecast
NWS forecast issued Mon, Oct 12, 3:01 PM. Forecasts change as rain falls and as upstream water arrives.
Get flood alerts for this river
An email when the National Weather Service forecasts Delaware River at Frenchtown to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 20 ft |
| Moderate flood stage | 18 ft |
| Flood stage | 16 ft |
| Action stage | 14 ft |
| Record crest (August 20, 1955) | 27.79 ft |
What floods at each level
From the National Weather Service, highest first.
- 21 ftFront Street and Railraod Avenue flood in Frenchtown.
- 17 ftTreasure Island is flooded. River Road in Erwinna Pennsylvania floods.
- 16 ftPortions of River Road and South Washington Street flood.
- 15.5 ftPortions of Trenton Avenue take on water.
- 13 ftMarshall Island is inundated.
- 9 ftWalls Island north of Frenchtown floods.
Highest crests on record
- 27.79 ft — August 20, 1955
- 24.4 ft — October 10, 1903
- 23.6 ft — April 4, 2005
- 23.4 ft — June 29, 2006
- 21.93 ft — March 19, 1936
Recent crests: 16.6 ft (September 2, 2021) · 19.02 ft (September 9, 2011) · 16.68 ft (August 29, 2011) · 17.21 ft (March 12, 2011) · 13.95 ft (October 2, 2010)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (FREN4); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.